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Meeting Materials Science & Technology 2020
Symposium Additive Manufacturing: Alloy Design to Develop New Feedstock Materials
Presentation Title Processing of Y2O3-modified Nickel Superalloy by Selective Laser Melting.
Author(s) Anthony De Luca, Christoph Kenel, David C. Dunand, Christian Leinenbach
On-Site Speaker (Planned) Anthony De Luca
Abstract Scope The consolidation of Oxide Dispersion Strengthened (ODS) alloys usually involves pressing at high temperatures, which typically prevents the fabrication of complex-shaped parts. The machining of these materials is also diffi-cult. These limitations are thus preventing wider use of ODS materials. The viability of processing ODS powders by Selective Laser Melting (SLM) has been demonstrated in recent years on various materials (i.e. Nickel, Steels, TiAl..), allowing to produce parts with complex shapes, with limited dispersoid coarsening due to the short melt-pool lifetime and high cooling rate. The processability of a Y2O3-modified, γ'-strengthened Ni-Cr-Al-Ti model alloy was studied under various SLM conditions. We show how the molten metal interacts with oxide nanoparticles, and relate it to the resulting mi-crostructure (grain refinement, cracking susceptibility, porosity, slagging). Additionally, the efficacy of a HIPing procedure, as well as the interaction between the ODS nanoparticles and γ' precipitates, were investigated.


3D Characterization of Cracks Formed in “Weldable” AA6061 and Implications for Alloy Design
Accidental Alloy Development: In-situ Evolution of AM Powder and Opportunities for New Material Synthesis Pathways
An Interdisciplinary Approach for Alloy Design for Additive Manufacturing
Application of Taguchi, Response Surface, and Artificial Neural Networks for Rapid Optimization of Direct Metal Laser Sintering Process
CALPHAD Informed Design of Rare-earth Containing Alloys for Additive Manufacturing
Characterization of Spatter with Organized Features in Laser Powder Bed Fusion
Development of Oxidation Resistant Multi-Principle Element Alloys Applied with Additive Manufacturing
High-Throughput Accelerated Alloy Development
Laser Additive Manufacturing of Nanocomposite Powders
Mechanical Alloying of Feedstock Powder for Additive Manufacturing by Selective Laser Melting: Aluminum Alloy Matrix Composites
Micro-crack Mitigation by Alloy Modification in the Additively Manufactured Ni-base Superalloy CM247LC
Microstructure and Property Variability in DED Inconel 718 as a Function of Build Rate
Opportunities to Improve the Mechanical Properties of Titanium Alloys Produced by Laser Powder Bed Fusion
Optimization of Nitrogen-Atomized 17-4 Stainless Steel Feedstock for AM Processing
Processing of Y2O3-modified Nickel Superalloy by Selective Laser Melting.
Residual Stress Mitigation of Additive Manufactured Stainless Steel 316L Components through the Directed Energy Deposition Inclusion of TiC Nanoparticles
Sensitivity Analysis and Composition Design for Metal Additive Manufacturing Using CALPHAD-based ICME Framework

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